Steam Quality Testing
Steam Quality Testing (SQT) comprises of three individual tests designed to test the performance of a steam generation system. These tests demonstrate the quality of steam and therefore it is suitability for its intended use.
We have standard Tri-Clamp (Tri-Clover) connections and Fedegari connections available.
Non Condensable Gases
This test is designed to demonstrate that the levels of non-condensable gases present in the steam will not impede the sterilization conditions of the Sterilizer load. Non Condensable Gases can be the route cause for equilibration time failures.
The acceptance criteria for this test detailed in EN 285:2015 is a maximum of 3.5% non-condensable gases.
Excess moisture carried in the steam suspension can be the root cause for wet autoclave loads, too little moisture within the steam can lead to superheated steam during the expansion into the chamber.
The acceptance criteria for this test detailed in EN 285:2015 is dryness value of not less than 0,95.
Note: The dryness value in previous versions of EN285 was detailed as 0,95 for metal loads and 0,90 for all other types of loads.
This test is used to demonstrate that the steam system is adequate to prevent steam from being superheated at the test point.
Superheated steam does not condense and therefore is less efficient than saturated steam. An autoclave fed with superheated steam performs like a dry heat sterilizer.
The acceptance criteria for this test detailed in EN 285:2015 is the superheat shall not exceed 25K.
Steam Quality Testing Failures?
If you have observed failures in your steam quality testing, we may be able to help. Please contact us and one of our experience engineers can help troubleshoot and resolve your issues.